In the realm of tractor gearbox applications, gear whine noise has long been a persistent challenge that significantly impacts the user experience and overall perceived performance of the vehicle. This paper delves into a comprehensive study that discusses the approach to tackling this issue through a combination of design optimizations, simulation techniques and physical validation processes.
GWJ Technology is starting a new seminar schedule in 2025. This year, GWJ is once again offering a wide range of different seminars that can be booked as online seminars or, if desired, as traditional face-to-face events. The online seminars are designed to be interactive and provide a comprehensive insight into the respective topic. Practical exercises deepen the content. Online seminars take place over two or three days and last two hours each.
Engineered with precision and versatility in mind, the MTB 105 is specifically designed to integrate into multi-axis medium- to large-sized Cartesian Gantry systems, providing robust support for medium to high payloads. Its fully enclosed design ensures reliability even in contaminant-prone environments, making it an ideal choice for a wide range of applications. Precision extrusions for each aluminum actuator body ensure all sides and bottom surfaces are flat and perpendicular giving accurate installations.
Siemens Digital Industries Software announced that Emotors, an independent e-drive manufacturer, has taken advantage of test solutions from the Siemens Xcelerator portfolio of industry software to aid in the development and constant improvement of its e-drive systems for hybrids, plug-ins and full electric vehicles (EVs).
The loaded tooth contact analysis (LTCA) is crucial in understanding the deformation of gears and its impact on various factors such as noise generation, contact patterns, contact shocks, and torque variations. With the contact analysis feature in KISSsoft, users can calculate tooth contact under specific torque and speed levels, thereby assessing the performance of gears and gearboxes.
Digital Metrology Solutions, provider of measurement software, consulting, and training, has introduced TraceBoss+ (TraceBoss Plus) software, integrating surface texture and crosshatch measurement in a single package.
It’s common to hear “surface roughness” described as a number that can be measured on a gage. But describing surface texture with a number is a lot like describing a concert in decibels: loudness is just part of the story. A rock band, an orchestra, and a chainsaw can all produce 100 decibels, but the full picture is much more complex and interesting.
NYCU (National Yang Ming Chia Tung University) Vulpes Racing—founded in 2008—is a Formula Student Team that combines mechanical engineering, industrial design, public relations, video production and marketing expertise.
The earliest example of a gear train dates to at least 2,000 B.C. when Chinese engineers built a chariot that used a complex planetary mechanism made of wooden gears to let a dragon head continuously point south when driven around (Ref. 1). In Greece, a surprisingly advanced Antikythera gearbox mechanism, incorporating at least 37 precisely crafted bronze gears, was built years later, between 205–60 B.C. (Ref. 2).
This study presents a simulation method for considering complex wheel bodies in an analytical tooth contact model. The wheel body is considered using reduced FE stiffness. Reduction points are defined over the width and linked with the analytical gear.
For cylindrical wheel bodies, comparative calculations show fewer deviations from the expected results with the new method. This is due to the additional degrees of freedom in the FEM model. In the calculation with cylindrical wheel bodies, bending due to axial force in tooth contact could also be verified in addition to the deformation in tooth contact and the influence of the shaft-bearing system.
EV developers are finding a competitive edge through efficiency gains not only in new battery pack technology and electronic components, but also through new developments in electric machines.
This Oriental Motor article provides more information on these types of noises and what can be done to minimize the noise. It's important to remember to isolate the motor from any other noise-making source, such as metal plates or loose bolts. It's also very useful to have an extra motor in good working condition for noise comparison, so you have a reference point.
Next-generation technology—everything from the electrification of vehicles to e-motors, bearings, mechatronics, and thermal management—was recently discussed during the Schaeffler Symposium 2022 in Detroit.
Stöber Antriebstechnik GmbH + Co. KG rely on the FVA-Workbench for dimensioning and verification of their drives. The calculation and simulation software allows Stöber engineers to develop their innovative gear unit solutions more quickly and efficiently. The result: higher quality products.
What's the latest in software design and simulation in the power transmission market? Here's a recap of some of the latest software solutions for bearings, gears, drivetrains and e-mobility applications.
Charging power. Infrastructure. Longer battery life. Every time the industry comes together for the CTI Symposium, we get a clearer picture of the technology development toward our electric future.
Siemens Digital has added features and updates for Simcenter SPEED, Simcenter Motorsolve and Simcenter MAGNET 2022.1 to improve accuracy, flexibility and connectivity. This 2022.1 update makes Simcenter SPEED and Simcenter Motorsolve more accurate and better integrated to Simcenter STAR-CCM+.
A Conversation with Jeff Hemphill, CTO at Schaeffler Group USA Inc. Matthew Jaster, Senior Editor
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